Global Patent Index - EP 1063780 A3

EP 1063780 A3 20031126 - Spread spectrum channel estimation sequences

Title (en)

Spread spectrum channel estimation sequences

Title (de)

Sequenzen zur Kanalschätzung bei Spreizspektrum

Title (fr)

Séquences pour l'estimation de canal à spectre étalé

Publication

EP 1063780 A3 20031126 (EN)

Application

EP 00304702 A 20000602

Priority

  • US 13719799 P 19990602
  • US 14283799 P 19990707
  • US 14285899 P 19990707

Abstract (en)

[origin: EP1063780A2] Code division multiple access channel estimation sequences generated by a base station plus user-specific code (e.g., 16 chips) modulating a sequence of pilot symbols (e.g., 16 symbols to yield a sequence of 256 chips) with different users having differing pilot symbol sequences. A hierarchical (Fig.6) structure can efficiently compute the delay profile and channel estimations of multiple users. <IMAGE>

IPC 1-7

H04B 1/707; H04J 13/04; H04L 25/02

IPC 8 full level

H03H 17/02 (2006.01); H03H 17/06 (2006.01); H04B 1/707 (2006.01); H04J 13/00 (2011.01); H04J 13/04 (2006.01); H04J 13/10 (2011.01); H04L 7/00 (2006.01); H04L 25/02 (2006.01); H04L 27/00 (2006.01); H04J 11/00 (2006.01)

CPC (source: EP)

H04B 1/707 (2013.01); H04J 13/0048 (2013.01); H04J 13/10 (2013.01); H04L 25/0226 (2013.01)

Citation (search report)

  • [XY] WO 9921375 A2 19990429 - ERICSSON TELEFON AB L M [SE]
  • [X] 3GPP: "3GPP S1.23 V0.0.2 Spreading and modulation (TDD)", 3GPP TSG RAN WG1 #2, 25 February 1999 (1999-02-25), pages 1 - 9, XP002254915, Retrieved from the Internet <URL:www.3gpp.org/ftp/tsg_ran/WG1_RL1/TSGR1_02/Docs/pdfs/R1-99120.pdf> [retrieved on 20030918]
  • [Y] STEINER B ET AL: "OPTIMUM AND SUBOPTIMUM CHANNEL ESTIMATION FOR THE UPLINK OF CDMA MOBILE RADIO SYSTEMS WITH JOINT DETECTION", EUROPEAN TRANSACTIONS ON TELECOMMUNICATIONS AND RELATED TECHNOLOGIES, AEI, MILANO, IT, VOL. 5, NR. 1, PAGE(S) 39-50, ISSN: 1120-3862, XP000445714
  • [Y] ABETA S ET AL: "PERFORMANCE COMPARISON BETWEEN TIME-MULTIPLEXED PILOT CHANNEL AND MOBILE RADIO. PARALLEL PILOT CHANNEL FOR COHERENT RAKE COMBINING IN DS-CDMA", IEICE TRANSACTIONS ON COMMUNICATIONS, INSTITUTE OF ELECTRONICS INFORMATION AND COMM. ENG. TOKYO, JP, VOL. E81-B, NR. 7, PAGE(S) 1417-1425, ISSN: 0916-8516, XP000790175
  • [A] HOLDEN T P ET AL: "A SPREAD-SPECTRUM BASED SYNCHRONIZATION TECHNIQUE FOR DIGITAL BROADCAST SYSTEMS", IEEE TRANSACTIONS ON BROADCASTING, IEEE INC. NEW YORK, US, VOL. 36, NR. 3, PAGE(S) 185-194, ISSN: 0018-9316, XP000161660
  • [A] TUFVESSON F ET AL: "Pilot assisted channel estimation for OFDM in mobile cellular systems", VEHICULAR TECHNOLOGY CONFERENCE, 1997, IEEE 47TH PHOENIX, AZ, USA 4-7 MAY 1997, NEW YORK, NY, USA,IEEE, US, PAGE(S) 1639-1643, ISBN: 0-7803-3659-3, XP010229045

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

EP 1063780 A2 20001227; EP 1063780 A3 20031126; JP 2001057545 A 20010227

DOCDB simple family (application)

EP 00304702 A 20000602; JP 2000205844 A 20000602